Paulo Grazziotti - Academia.edu (original) (raw)
Papers by Paulo Grazziotti
Revista Brasileira de Ciência do Solo
Technological advances have demonstrated the need for intellectual property rights, and patent gr... more Technological advances have demonstrated the need for intellectual property rights, and patent granting is one of its most widespread forms. This includes the protection of inoculant formulations for agriculture, in which Brazil is a leader. This study aimed to analyze the number of patents for formulations of biological inoculants for agriculture in Brazil and the microorganisms used. An advanced search was performed in the National Institute of Industrial Property database, using the title and abstract fields. The indexers included inoculant, bioinoculant, endophyte, endophytic, fungus, bacteria, Rhizobium, Azospirillum and Gluconacetobacter. The inoculant formulation patents were grouped by the number of files per decade, number of patents per holder(s), characterization of granted patents, international patent classification, and main genera of fungi and bacteria used in inoculant formulations per decade. The number of patents filed for inoculant formulations in the last four decades increased from 7 in the first decade (1981-1990) to 37 from 2011-2020. In the first decades of study, the use of Rhizobium in inoculants stood out, followed by other genera of fungi and bacteria. However, most inoculant patent applications are still denied, considering data from 1981 to 2020. This may be partially due to the low reproducibility of inoculant results, as microorganism activity is highly affected by climate, soil, plant cultivars and crop management. The percentage of acceptance equal to or higher than 50 % in the number of applied patents for using endophytic microorganisms may be because this group of microorganisms acts mainly inside plants and is thus more protected from the influence of climate and some soil and management factors. The growing number of patent applications in the last 40 years demonstrates the business and technological development interest in inoculants in Brazil.
Bioscience Journal, 2013
As lagoas de estabilizacao, em virtude da sua simplicidade e eficiencia do processo, do baixo cus... more As lagoas de estabilizacao, em virtude da sua simplicidade e eficiencia do processo, do baixo custo de construcao e operacao e das condicoes climaticas favoraveis, apresentam-se como solucao para atender a grande parte dos requisitos impostos para o tratamento dos dejetos na regiao do Vale do Jequitinhonha. Diante disso, o objetivo do trabalho foi caracterizar os parâmetros fisico-quimicos de dejetos liquidos de suinos (DLS) tratados em sistema de lagoas de estabilizacao em serie e avaliar a reducao do seu potencial poluidor. O estudo foi conduzido na granja Campo Alegre no municipio de Diamantina-MG. Os dejetos foram coletados nos seguintes locais: saida das instalacoes, saida da lagoa anaerobia, saida da primeira lagoa facultativa e saida da segunda lagoa facultativa. O sistema de lagoas de estabilizacao em serie apresentou 88% de eficiencia na remocao da DQOt e 91% na remocao de DBO5. Os elementos Mg, Fe, Mn e P foram removidos nos percentuais de 66; 83; 33 e 54%, respectivamente...
Weed interference in crops of economic interest is one of the major plant defense problems (Oerke... more Weed interference in crops of economic interest is one of the major plant defense problems (Oerke 2006). Among various weed species, blackjack biotypes (Bidens pilosa L.), in some cases, are classified as the most important ones in coffee plantations, due to the fast initial growth and efficient use of environmental resources, especially nutrients and water (Ronchi et al. 2007, Santos & Cury 2011). Herbicides are the main control method for weed management in coffee plantations, in Brazil.
Background: Mining activities are carried out for decades in the Cerrado, among which stands out ... more Background: Mining activities are carried out for decades in the Cerrado, among which stands out the extraction of gravel which causes the soil degradation resulting in chemical, physical and biological characteristics that are distant from the ideal. Given the positive effects of the use of treated organic waste recovery in soil properties and growing societal concern with the exponential increase in production of these wastes. Objective: The present work aimed to evaluate the characteristics of the substrate mined from a degraded area of savanna for gravel extraction in Diamantina - MG, after the addition of increasing doses of compost from organic waste of textile industry. Results: The addition of the compound provided an increase in pH, organic matter, sum of bases, CTC, base saturation and nutrients (P, K, Ca 2 + and Mg 2 +) . It caused a reduction of potential acidity (Al 3+ ), exchangeable acidity (H+Al) and aluminum saturation. The mined substrate showed high values of Rp i...
FLORESTA
Mining results in major landscape changes. Restoring areas after exploitation of natural resource... more Mining results in major landscape changes. Restoring areas after exploitation of natural resources can be accomplished through adopting techniques used to optimize the restoration process. Among such techniques, planting seedlings of species adapted to adverse edaphoclimatic conditions and which have interspecific associations with microorganisms stand out. One of these indigenous species which occur in the Southern Espinhaço Mountain Range with potential for use in restoring degraded areas is Kielmeyera rubriflora (Spreng) Mart. Thus, the objective of this study was to evaluate the influence of inoculating arbuscular mycorrhizal fungi on the survival and growth of Kielmeyera rubriflora Cambess. on two substrates from iron mining. The experiment was carried out in a nursery of the UFVJM Plant Species Propagation Center (CIPEF) in a randomized block design and treatments arranged in a 2 x 2 factorial design, using two iron mining substrates and inoculated and uninoculated plants with...
Revista Brasileira de Engenharia Agrícola e Ambiental
The final destination of solid industrial waste is one of the main environmental problems current... more The final destination of solid industrial waste is one of the main environmental problems currently facing, due to its potential for contamination. With the evolution of environmental policy and awareness, the proper destination of these wastes is stimulated, seeking new technologies to fulfil the demand for the products generated. One of the solutions to this environmental problem is to use these residues as fertilizers in agriculture. The objective of this study was to evaluate the use of toxic textile residues as a substrate component of coffee seedlings and as fertilizer in the initial growth of coffee plants. The study was divided into three experiments: production of seedlings, initial growth of potted plants and in the field. In the production of seedlings, the treatments consisted of different proportions of organic compost residues from the textile industry: 0, 4, 8, 16 and 32% and a conventional treatment of seedling production. In pots and in the field, the same treatment...
African Journal of Agricultural Research, Mar 26, 2015
This research is aimed at evaluating the effects of the glycerin effluent from the biodiesel indu... more This research is aimed at evaluating the effects of the glycerin effluent from the biodiesel industry resulting from chemical processes involving the transesterification of triacylglicerides in bio-oils, a reaction catalyzed with potassium hydroxide. This glycerin material (hereinafter referred to as "Kglycerin") may be assumed to be a potential source of potassium to increase the yields of soybean crops and to promote corresponding alterations in some chemical and microbiological properties of the soil. Two field assays were conducted on two soils classified (i) Typical Hapludox (Perox suborder of the Oxisol order, according to the USDA Soil Taxonomy System. In this work, this site was identified simply as TH) and (ii) Typical Quartzipsamment (Aquents suborder of the Entisols order; TQ), in the state of Minas Gerais, Brazil. The used treatments were: (i) four doses (corresponding to 0, 40, 80 and 160 kg ha-1 K 2 O) on the TH soil and four doses (corresponding to 0, 60, 120 and 240 kg ha-1 K 2 O) on the TQ soil form, and (ii) two potassium sources (specifically, KCl and K 2 SO 4) at a K 2 O equivalent doses of 80 kg ha-1 on the TH soil and 120 kg ha-1 on the TQ soil. The soybean yields resulting from the application of K-glycerin were found to be related to the availability of K in the soil and this source supplied in part the need of potassium by soybean crop. The K-glycerin does not cause any readily detectable harmful or environmental effect to these cropping sites; however, further detailed studies are needed to better evaluate the long-term use to understand the soil ions dynamics under the soybean crop.
Revista Brasileira de Sementes, 2008
O objetivo deste trabalho foi avaliar a qualidade fisiológica de sementes da sempre-viva (Syngona... more O objetivo deste trabalho foi avaliar a qualidade fisiológica de sementes da sempre-viva (Syngonanthus elegans (Bong.) Ruhland) colhidas em diferentes épocas e locais e submetidas ao armazenamento. Capítulos de S. elegans foram colhidos em duas áreas de ocorrência natural no Campus II da Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, em Diamantina, MG, em um Neossolo Quartzarênico Órtico típico (local 1) e Neossolo Quartzarênico Hidromórfico típico (local 2), em cinco épocas (04/07/05, 19/07/05, 22/08/05, 21/09/05 e 20/10/05) e, posteriormente, submetidos a testes para avaliação do vigor e da germinação da semente (Experimento 1). Os capítulos colhidos em 04/07/05 (locais 1 e 2) foram acondicionados em sacos de polietileno transparente e armazenados no Laboratório de Sementes em temperatura ambiente (20º±2ºC) ou em geladeira (5º±2ºC), por zero, quatro, oito e 12 meses. Após esses períodos, as sementes foram novamente avaliadas quanto ao vigor e à germinação (Exper...
Revista Brasileira de Ciência do Solo, 2001
Ectomycorrhizal symbiosis can play a crucial role in protecting plant roots from heavy metals. Ho... more Ectomycorrhizal symbiosis can play a crucial role in protecting plant roots from heavy metals. However, a high heavy metal contamination can inhibit ectomycorrhizal fungi growth and activity, negatively influencing mycorhizal symbiosis. The growth of nine isolates of Pisolithus tinctorius, two of Suillus bovinus and one of Scleroderma sp. was assessed to evaluate the effect of Zn, Cd, Cu and Pb contaminated soil-sand mixes added to the liquid culture media, at different proportions. Addition of contaminated soil to the media reduced mycelial growth of all isolates, except of PT-306 at media with low proportion of contaminated soil mixes. The isolates showed inter and intra-specific variations in multiple contaminated soil. In general, Pisolithus isolates were more tolerant than those of S. bovinus or Scleroderma sp., with PT-306 being the most tolerant. S. bovinus isolates considered tolerant to Zn were sensitive to multiple soil contamination. Production of extracellular pigments b...
Agrarian, 2012
Informações sobre a nutrição da amoreira ainda são insipientes e para viabilizar a produção das m... more Informações sobre a nutrição da amoreira ainda são insipientes e para viabilizar a produção das mudas tem-se buscado alternativas para reduzir os custos de produção e o tempo da muda no viveiro. A utilização de composto com resíduo da indústria têxtil apresenta-se como alternativa favorável, pois evita a poluição do ambiente e serve como fonte de nutrientes. O trabalho foi realizado com o objetivo de avaliar a formulação do substrato com composto de resíduo da indústria têxtil sobre a absorção de macro e micronutrientes da amoreira preta cv. Brazos. Foi utilizado o delineamento inteiramente casualizado, com quatro formulações de substratos, cinco repetições e cinco mudas por parcelas. O substrato foi formulado com composto de resíduos da indústria têxtil e Latossolo nas seguintes proporções: 0:1, 1:2, 1:1 e 2:1 (v/v). As mudas foram obtidas a partir de estaquia e colocadas em recipientes de 650 mL, contendo o substrato preparado. Aos 90 dias após o transplantio das mudas, foram reti...
RESUMO A aplicação da vinhaça em altas doses no solo, pode causar efeitos indesejáveis como salin... more RESUMO A aplicação da vinhaça em altas doses no solo, pode causar efeitos indesejáveis como salinização e poluição do lençol freático, podendo também lixiviar vários íons, sobretudo nitrato e potássio. Uma das possibilidades para o uso da vinhaça ocorre com o tratamento biológico feito pela levedura Candida utilis-Torula. O uso da Candida utilis se tornou favorável para tratar a vinhaça, pois essa levedura tem capacidade em assimilar hexoses, pentoses, ácidos, álcoois e aldeídos. Através do cultivo da Candida utilis na vinhaça, é possível obter um novo resíduo que deixa de ser contaminante e pode ser descartado e utilizado como fertilizante. Este trabalho teve como objetivos avaliar e otimizar o crescimento de Candida utilis em vinhaça com 1 % de glicose, enriquecida com extrato de malte ou extrato de levedura. O delineamento foi inteiramente casualizado e os tratamentos foram dispostos em esquema fatorial 2 x 5, sendo os aditivos extrato de levedura e extrato e malte adicionados a vinhaça à 1 % de glicose, nas concentrações 0,0; 2,0; 4,0; 8,0 e 12 g L-1 , com quatro repetições. De acordo com as análises bromatológicas feitas anteriormente, os carboidratos totais contidos na vinhaça utilizada, são açúcares essenciais para o crescimento de células da Candida utilis tornando-se inviável a adição de extrato de levedura e extrato de malte, já que além das características desejáveis da vinhaça, a adição da glicose ao meio promoveu maior produção de proteínas celulares tornando a prática viável e menos onerosa.
EJBS, Feb 1, 2013
High Jequitinhonha Valley has been ascending as coffee pole in Minas Gerais state, Brazil. Howeve... more High Jequitinhonha Valley has been ascending as coffee pole in Minas Gerais state, Brazil. However, little importance has been given to the diagnosis of the nutritional coffee state that provides together high yield the best drink quality. The objective of this work is to establish DRIS norms and adequate critical range that provides the best nutritional state along with coffee drink quality (measured by polyphenyloxidase enzyme activity) from Jequitinhonha Valley region, MG. DRIS norms were established to the best nutritional state and coffee drink quality from Jequitinhonha Valley region, Minas Gerais. Values suggested were: N (22.0 - 24.8 g kg-1), P (2.0 - 2.4 g kg-1), K (14.9 - 17.9 g kg-1), Ca (13.0 - 16.1 g kg-1), Mg (3.2 - 3.8 g kg-1), S (1.0 - 1.3 g kg-1), B (77.3 - 89.1 mg kg-1), Cu (3.1 - 3.8 mg kg-1), Fe (174.0 - 242.4 mg kg-1), Mn (197.5 - 341.8 mg kg-1) and Zn (19.8 - 31.0 mg kg-1).
Revista Brasileira De Ciencia Do Solo, 2000
Different sites of an iron mining from Mariana, Minas Gerais, Brazil, were evaluated for determin... more Different sites of an iron mining from Mariana, Minas Gerais, Brazil, were evaluated for determining the degree of their degradation or reclamation, using microbial activity of soil, spore numbers of arbuscular mycorrhizal fungi (AMF) and total count of fungi and bacteria. Each site contained a substrate characterized as flotation refuse (Rj), Soil without vegetation (SS), Subsoil (Ss), Subsoil with vegetation (SsV), site under recuperation (AR) and forest (MS), and was sampled at 10-25 cm. Establishment of grasses and “candeia” (Vanillosmopsis erythropappa Schult. Bip.) plants in subsoil samples increased spore number of AMF, organic carbon content and microbial activity obtained by adition of sucrose and sucrose + urea. Spores of AMF were detected in sites with plant growth, only. Topsoil storage reduced organic carbon content, total nitrogen, spore number of AMF and microbial activity. In the material/substrates generated by iron mining, microbial activity responded only after carbon and nitrogen adition. Microbiological parameters evaluated were greater on the (undisturbed) forest site than on the other soils or substrates, indicating that the sites under reclamation were not under the same biological equilibrium. Soil microbiological evaluation could distinguish the degree of degradation or reclamation of the different sites studied.
Revista Brasileira De Oleaginosas E Fibrosas, 2010
The physic nut is a native oleaginous plant that has been being distinguished nationally as a cul... more The physic nut is a native oleaginous plant that has been being distinguished nationally as a culture that can be planted in marginal areas for biodiesel production. The aim of this work was to evaluate growth of the physic nut in Quartzarenic Neosol. The experiment was conducted in a greenhouse at UFVJM, in city of Diamantina, state of Minas Gerais, Brazil, from March 2008 to June 2008. Seedlings were cultivated in pots with Quartzarenic Neosol, under the following treatments: complete treatment (fertilized with N, P, K, Ca, Mg, S, B and Zn), control treatment (natural soil), and treatment of absence of one of those nutrients at a time (-N, -P, -K, -Ca, -Mg, -S, -B and -Zn), prepared in a completely randomized design with five replicates. Plant height, stem diameter, and dry weight mass of shoot and roots were evaluated after 100 days. Growth of the physic nut cultivated in Quartzarenic Neossol decreases according to the following descending order of nutrients used in fertilization: P, Mg, Zn, S, Ca, B, K and N.
African Journal of Agricultural Research, 2015
This research is aimed at evaluating the effects of the glycerin effluent from the biodiesel indu... more This research is aimed at evaluating the effects of the glycerin effluent from the biodiesel industry resulting from chemical processes involving the transesterification of triacylglicerides in bio-oils, a reaction catalyzed with potassium hydroxide. This glycerin material (hereinafter referred to as "Kglycerin") may be assumed to be a potential source of potassium to increase the yields of soybean crops and to promote corresponding alterations in some chemical and microbiological properties of the soil. Two field assays were conducted on two soils classified (i) Typical Hapludox (Perox suborder of the Oxisol order, according to the USDA Soil Taxonomy System. In this work, this site was identified simply as TH) and (ii) Typical Quartzipsamment (Aquents suborder of the Entisols order; TQ), in the state of Minas Gerais, Brazil. The used treatments were: (i) four doses (corresponding to 0, 40, 80 and 160 kg ha-1 K2O) on the TH soil and four doses (corresponding to 0, 60, 120 and 240 kg ha-1 K2O) on the TQ soil form, and (ii) two potassium sources (specifically, KCl and K2SO4) at a K2O equivalent doses of 80 kg ha-1 on the TH soil and 120 kg ha-1 on the TQ soil. The soybean yields resulting from the application of K-glycerin were found to be related to the availability of K in the soil and this source supplied in part the need of potassium by soybean crop. The K-glycerin does not cause any readily detectable harmful or environmental effect to these cropping sites; however, further detailed studies are needed to better evaluate the long-term use to understand the soil ions dynamics under the soybean crop.
Pesquisa Agropecuária Tropical, 2016
Weed interference in crops of economic interest is one of the major plant defense problems (Oerke... more Weed interference in crops of economic interest is one of the major plant defense problems (Oerke 2006). Among various weed species, blackjack biotypes (Bidens pilosa L.), in some cases, are classified as the most important ones in coffee plantations, due to the fast initial growth and efficient use of environmental resources, especially nutrients and water (Ronchi et al. 2007, Santos & Cury 2011). Herbicides are the main control method for weed management in coffee plantations, in Brazil.
How to cite Complete issue More information about this article Journal's homepage in redalyc.org ... more How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative
How to cite Complete issue More information about this article Journal's homepage in redalyc... more How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System
South American Journal of Basic Education, Technical and Technological, 2020
Revista Brasileira de …, 2011
To mitigate the impacts of eucalypt monoculture, forestry companies in the Upper Jequitinhonha Va... more To mitigate the impacts of eucalypt monoculture, forestry companies in the Upper Jequitinhonha Valley (MG) have adopted the insertion of strips of native vegetation in-between the commercial plantations. The method used for the creation of these corridors is to allow spontaneous regrowth of native vegetation in areas previously under eucalypt. The objective of this study was to evaluate the effect of cover crops on microbial and soil properties for a detailed description of the restoration process of native vegetation in forest soils of the Jequitinhonha Valley. The treatments were represented by an initial restoration stage (< 4 years) with or without remaining eucalypt and the advanced restoration stage (> 4 years) with or without remaining eucalypt, plus the three controls: commercial eucalypt plantation, Cerrado vegetation and native forest. Soil samples were collected for three consecutive years in the dry and rainy season (August and February, respectively). The microbial activity, regardless of the presence of remaining eucalypt , did not differ among the restoration areas, except for the metabolic quotient (qCO 2) in the rainy season of February 2007. At this time, this microbial activity was higher in the advanced restoration stage without eucalypt than initial restoration without eucalypt and advanced restoration with eucalypt. The Termos de indexação: revegetação espontânea, qualidade de solo, áreas degradadas, biomassa microbiana, atividade microbiana.
Revista Brasileira de Ciência do Solo
Technological advances have demonstrated the need for intellectual property rights, and patent gr... more Technological advances have demonstrated the need for intellectual property rights, and patent granting is one of its most widespread forms. This includes the protection of inoculant formulations for agriculture, in which Brazil is a leader. This study aimed to analyze the number of patents for formulations of biological inoculants for agriculture in Brazil and the microorganisms used. An advanced search was performed in the National Institute of Industrial Property database, using the title and abstract fields. The indexers included inoculant, bioinoculant, endophyte, endophytic, fungus, bacteria, Rhizobium, Azospirillum and Gluconacetobacter. The inoculant formulation patents were grouped by the number of files per decade, number of patents per holder(s), characterization of granted patents, international patent classification, and main genera of fungi and bacteria used in inoculant formulations per decade. The number of patents filed for inoculant formulations in the last four decades increased from 7 in the first decade (1981-1990) to 37 from 2011-2020. In the first decades of study, the use of Rhizobium in inoculants stood out, followed by other genera of fungi and bacteria. However, most inoculant patent applications are still denied, considering data from 1981 to 2020. This may be partially due to the low reproducibility of inoculant results, as microorganism activity is highly affected by climate, soil, plant cultivars and crop management. The percentage of acceptance equal to or higher than 50 % in the number of applied patents for using endophytic microorganisms may be because this group of microorganisms acts mainly inside plants and is thus more protected from the influence of climate and some soil and management factors. The growing number of patent applications in the last 40 years demonstrates the business and technological development interest in inoculants in Brazil.
Bioscience Journal, 2013
As lagoas de estabilizacao, em virtude da sua simplicidade e eficiencia do processo, do baixo cus... more As lagoas de estabilizacao, em virtude da sua simplicidade e eficiencia do processo, do baixo custo de construcao e operacao e das condicoes climaticas favoraveis, apresentam-se como solucao para atender a grande parte dos requisitos impostos para o tratamento dos dejetos na regiao do Vale do Jequitinhonha. Diante disso, o objetivo do trabalho foi caracterizar os parâmetros fisico-quimicos de dejetos liquidos de suinos (DLS) tratados em sistema de lagoas de estabilizacao em serie e avaliar a reducao do seu potencial poluidor. O estudo foi conduzido na granja Campo Alegre no municipio de Diamantina-MG. Os dejetos foram coletados nos seguintes locais: saida das instalacoes, saida da lagoa anaerobia, saida da primeira lagoa facultativa e saida da segunda lagoa facultativa. O sistema de lagoas de estabilizacao em serie apresentou 88% de eficiencia na remocao da DQOt e 91% na remocao de DBO5. Os elementos Mg, Fe, Mn e P foram removidos nos percentuais de 66; 83; 33 e 54%, respectivamente...
Weed interference in crops of economic interest is one of the major plant defense problems (Oerke... more Weed interference in crops of economic interest is one of the major plant defense problems (Oerke 2006). Among various weed species, blackjack biotypes (Bidens pilosa L.), in some cases, are classified as the most important ones in coffee plantations, due to the fast initial growth and efficient use of environmental resources, especially nutrients and water (Ronchi et al. 2007, Santos & Cury 2011). Herbicides are the main control method for weed management in coffee plantations, in Brazil.
Background: Mining activities are carried out for decades in the Cerrado, among which stands out ... more Background: Mining activities are carried out for decades in the Cerrado, among which stands out the extraction of gravel which causes the soil degradation resulting in chemical, physical and biological characteristics that are distant from the ideal. Given the positive effects of the use of treated organic waste recovery in soil properties and growing societal concern with the exponential increase in production of these wastes. Objective: The present work aimed to evaluate the characteristics of the substrate mined from a degraded area of savanna for gravel extraction in Diamantina - MG, after the addition of increasing doses of compost from organic waste of textile industry. Results: The addition of the compound provided an increase in pH, organic matter, sum of bases, CTC, base saturation and nutrients (P, K, Ca 2 + and Mg 2 +) . It caused a reduction of potential acidity (Al 3+ ), exchangeable acidity (H+Al) and aluminum saturation. The mined substrate showed high values of Rp i...
FLORESTA
Mining results in major landscape changes. Restoring areas after exploitation of natural resource... more Mining results in major landscape changes. Restoring areas after exploitation of natural resources can be accomplished through adopting techniques used to optimize the restoration process. Among such techniques, planting seedlings of species adapted to adverse edaphoclimatic conditions and which have interspecific associations with microorganisms stand out. One of these indigenous species which occur in the Southern Espinhaço Mountain Range with potential for use in restoring degraded areas is Kielmeyera rubriflora (Spreng) Mart. Thus, the objective of this study was to evaluate the influence of inoculating arbuscular mycorrhizal fungi on the survival and growth of Kielmeyera rubriflora Cambess. on two substrates from iron mining. The experiment was carried out in a nursery of the UFVJM Plant Species Propagation Center (CIPEF) in a randomized block design and treatments arranged in a 2 x 2 factorial design, using two iron mining substrates and inoculated and uninoculated plants with...
Revista Brasileira de Engenharia Agrícola e Ambiental
The final destination of solid industrial waste is one of the main environmental problems current... more The final destination of solid industrial waste is one of the main environmental problems currently facing, due to its potential for contamination. With the evolution of environmental policy and awareness, the proper destination of these wastes is stimulated, seeking new technologies to fulfil the demand for the products generated. One of the solutions to this environmental problem is to use these residues as fertilizers in agriculture. The objective of this study was to evaluate the use of toxic textile residues as a substrate component of coffee seedlings and as fertilizer in the initial growth of coffee plants. The study was divided into three experiments: production of seedlings, initial growth of potted plants and in the field. In the production of seedlings, the treatments consisted of different proportions of organic compost residues from the textile industry: 0, 4, 8, 16 and 32% and a conventional treatment of seedling production. In pots and in the field, the same treatment...
African Journal of Agricultural Research, Mar 26, 2015
This research is aimed at evaluating the effects of the glycerin effluent from the biodiesel indu... more This research is aimed at evaluating the effects of the glycerin effluent from the biodiesel industry resulting from chemical processes involving the transesterification of triacylglicerides in bio-oils, a reaction catalyzed with potassium hydroxide. This glycerin material (hereinafter referred to as "Kglycerin") may be assumed to be a potential source of potassium to increase the yields of soybean crops and to promote corresponding alterations in some chemical and microbiological properties of the soil. Two field assays were conducted on two soils classified (i) Typical Hapludox (Perox suborder of the Oxisol order, according to the USDA Soil Taxonomy System. In this work, this site was identified simply as TH) and (ii) Typical Quartzipsamment (Aquents suborder of the Entisols order; TQ), in the state of Minas Gerais, Brazil. The used treatments were: (i) four doses (corresponding to 0, 40, 80 and 160 kg ha-1 K 2 O) on the TH soil and four doses (corresponding to 0, 60, 120 and 240 kg ha-1 K 2 O) on the TQ soil form, and (ii) two potassium sources (specifically, KCl and K 2 SO 4) at a K 2 O equivalent doses of 80 kg ha-1 on the TH soil and 120 kg ha-1 on the TQ soil. The soybean yields resulting from the application of K-glycerin were found to be related to the availability of K in the soil and this source supplied in part the need of potassium by soybean crop. The K-glycerin does not cause any readily detectable harmful or environmental effect to these cropping sites; however, further detailed studies are needed to better evaluate the long-term use to understand the soil ions dynamics under the soybean crop.
Revista Brasileira de Sementes, 2008
O objetivo deste trabalho foi avaliar a qualidade fisiológica de sementes da sempre-viva (Syngona... more O objetivo deste trabalho foi avaliar a qualidade fisiológica de sementes da sempre-viva (Syngonanthus elegans (Bong.) Ruhland) colhidas em diferentes épocas e locais e submetidas ao armazenamento. Capítulos de S. elegans foram colhidos em duas áreas de ocorrência natural no Campus II da Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, em Diamantina, MG, em um Neossolo Quartzarênico Órtico típico (local 1) e Neossolo Quartzarênico Hidromórfico típico (local 2), em cinco épocas (04/07/05, 19/07/05, 22/08/05, 21/09/05 e 20/10/05) e, posteriormente, submetidos a testes para avaliação do vigor e da germinação da semente (Experimento 1). Os capítulos colhidos em 04/07/05 (locais 1 e 2) foram acondicionados em sacos de polietileno transparente e armazenados no Laboratório de Sementes em temperatura ambiente (20º±2ºC) ou em geladeira (5º±2ºC), por zero, quatro, oito e 12 meses. Após esses períodos, as sementes foram novamente avaliadas quanto ao vigor e à germinação (Exper...
Revista Brasileira de Ciência do Solo, 2001
Ectomycorrhizal symbiosis can play a crucial role in protecting plant roots from heavy metals. Ho... more Ectomycorrhizal symbiosis can play a crucial role in protecting plant roots from heavy metals. However, a high heavy metal contamination can inhibit ectomycorrhizal fungi growth and activity, negatively influencing mycorhizal symbiosis. The growth of nine isolates of Pisolithus tinctorius, two of Suillus bovinus and one of Scleroderma sp. was assessed to evaluate the effect of Zn, Cd, Cu and Pb contaminated soil-sand mixes added to the liquid culture media, at different proportions. Addition of contaminated soil to the media reduced mycelial growth of all isolates, except of PT-306 at media with low proportion of contaminated soil mixes. The isolates showed inter and intra-specific variations in multiple contaminated soil. In general, Pisolithus isolates were more tolerant than those of S. bovinus or Scleroderma sp., with PT-306 being the most tolerant. S. bovinus isolates considered tolerant to Zn were sensitive to multiple soil contamination. Production of extracellular pigments b...
Agrarian, 2012
Informações sobre a nutrição da amoreira ainda são insipientes e para viabilizar a produção das m... more Informações sobre a nutrição da amoreira ainda são insipientes e para viabilizar a produção das mudas tem-se buscado alternativas para reduzir os custos de produção e o tempo da muda no viveiro. A utilização de composto com resíduo da indústria têxtil apresenta-se como alternativa favorável, pois evita a poluição do ambiente e serve como fonte de nutrientes. O trabalho foi realizado com o objetivo de avaliar a formulação do substrato com composto de resíduo da indústria têxtil sobre a absorção de macro e micronutrientes da amoreira preta cv. Brazos. Foi utilizado o delineamento inteiramente casualizado, com quatro formulações de substratos, cinco repetições e cinco mudas por parcelas. O substrato foi formulado com composto de resíduos da indústria têxtil e Latossolo nas seguintes proporções: 0:1, 1:2, 1:1 e 2:1 (v/v). As mudas foram obtidas a partir de estaquia e colocadas em recipientes de 650 mL, contendo o substrato preparado. Aos 90 dias após o transplantio das mudas, foram reti...
RESUMO A aplicação da vinhaça em altas doses no solo, pode causar efeitos indesejáveis como salin... more RESUMO A aplicação da vinhaça em altas doses no solo, pode causar efeitos indesejáveis como salinização e poluição do lençol freático, podendo também lixiviar vários íons, sobretudo nitrato e potássio. Uma das possibilidades para o uso da vinhaça ocorre com o tratamento biológico feito pela levedura Candida utilis-Torula. O uso da Candida utilis se tornou favorável para tratar a vinhaça, pois essa levedura tem capacidade em assimilar hexoses, pentoses, ácidos, álcoois e aldeídos. Através do cultivo da Candida utilis na vinhaça, é possível obter um novo resíduo que deixa de ser contaminante e pode ser descartado e utilizado como fertilizante. Este trabalho teve como objetivos avaliar e otimizar o crescimento de Candida utilis em vinhaça com 1 % de glicose, enriquecida com extrato de malte ou extrato de levedura. O delineamento foi inteiramente casualizado e os tratamentos foram dispostos em esquema fatorial 2 x 5, sendo os aditivos extrato de levedura e extrato e malte adicionados a vinhaça à 1 % de glicose, nas concentrações 0,0; 2,0; 4,0; 8,0 e 12 g L-1 , com quatro repetições. De acordo com as análises bromatológicas feitas anteriormente, os carboidratos totais contidos na vinhaça utilizada, são açúcares essenciais para o crescimento de células da Candida utilis tornando-se inviável a adição de extrato de levedura e extrato de malte, já que além das características desejáveis da vinhaça, a adição da glicose ao meio promoveu maior produção de proteínas celulares tornando a prática viável e menos onerosa.
EJBS, Feb 1, 2013
High Jequitinhonha Valley has been ascending as coffee pole in Minas Gerais state, Brazil. Howeve... more High Jequitinhonha Valley has been ascending as coffee pole in Minas Gerais state, Brazil. However, little importance has been given to the diagnosis of the nutritional coffee state that provides together high yield the best drink quality. The objective of this work is to establish DRIS norms and adequate critical range that provides the best nutritional state along with coffee drink quality (measured by polyphenyloxidase enzyme activity) from Jequitinhonha Valley region, MG. DRIS norms were established to the best nutritional state and coffee drink quality from Jequitinhonha Valley region, Minas Gerais. Values suggested were: N (22.0 - 24.8 g kg-1), P (2.0 - 2.4 g kg-1), K (14.9 - 17.9 g kg-1), Ca (13.0 - 16.1 g kg-1), Mg (3.2 - 3.8 g kg-1), S (1.0 - 1.3 g kg-1), B (77.3 - 89.1 mg kg-1), Cu (3.1 - 3.8 mg kg-1), Fe (174.0 - 242.4 mg kg-1), Mn (197.5 - 341.8 mg kg-1) and Zn (19.8 - 31.0 mg kg-1).
Revista Brasileira De Ciencia Do Solo, 2000
Different sites of an iron mining from Mariana, Minas Gerais, Brazil, were evaluated for determin... more Different sites of an iron mining from Mariana, Minas Gerais, Brazil, were evaluated for determining the degree of their degradation or reclamation, using microbial activity of soil, spore numbers of arbuscular mycorrhizal fungi (AMF) and total count of fungi and bacteria. Each site contained a substrate characterized as flotation refuse (Rj), Soil without vegetation (SS), Subsoil (Ss), Subsoil with vegetation (SsV), site under recuperation (AR) and forest (MS), and was sampled at 10-25 cm. Establishment of grasses and “candeia” (Vanillosmopsis erythropappa Schult. Bip.) plants in subsoil samples increased spore number of AMF, organic carbon content and microbial activity obtained by adition of sucrose and sucrose + urea. Spores of AMF were detected in sites with plant growth, only. Topsoil storage reduced organic carbon content, total nitrogen, spore number of AMF and microbial activity. In the material/substrates generated by iron mining, microbial activity responded only after carbon and nitrogen adition. Microbiological parameters evaluated were greater on the (undisturbed) forest site than on the other soils or substrates, indicating that the sites under reclamation were not under the same biological equilibrium. Soil microbiological evaluation could distinguish the degree of degradation or reclamation of the different sites studied.
Revista Brasileira De Oleaginosas E Fibrosas, 2010
The physic nut is a native oleaginous plant that has been being distinguished nationally as a cul... more The physic nut is a native oleaginous plant that has been being distinguished nationally as a culture that can be planted in marginal areas for biodiesel production. The aim of this work was to evaluate growth of the physic nut in Quartzarenic Neosol. The experiment was conducted in a greenhouse at UFVJM, in city of Diamantina, state of Minas Gerais, Brazil, from March 2008 to June 2008. Seedlings were cultivated in pots with Quartzarenic Neosol, under the following treatments: complete treatment (fertilized with N, P, K, Ca, Mg, S, B and Zn), control treatment (natural soil), and treatment of absence of one of those nutrients at a time (-N, -P, -K, -Ca, -Mg, -S, -B and -Zn), prepared in a completely randomized design with five replicates. Plant height, stem diameter, and dry weight mass of shoot and roots were evaluated after 100 days. Growth of the physic nut cultivated in Quartzarenic Neossol decreases according to the following descending order of nutrients used in fertilization: P, Mg, Zn, S, Ca, B, K and N.
African Journal of Agricultural Research, 2015
This research is aimed at evaluating the effects of the glycerin effluent from the biodiesel indu... more This research is aimed at evaluating the effects of the glycerin effluent from the biodiesel industry resulting from chemical processes involving the transesterification of triacylglicerides in bio-oils, a reaction catalyzed with potassium hydroxide. This glycerin material (hereinafter referred to as "Kglycerin") may be assumed to be a potential source of potassium to increase the yields of soybean crops and to promote corresponding alterations in some chemical and microbiological properties of the soil. Two field assays were conducted on two soils classified (i) Typical Hapludox (Perox suborder of the Oxisol order, according to the USDA Soil Taxonomy System. In this work, this site was identified simply as TH) and (ii) Typical Quartzipsamment (Aquents suborder of the Entisols order; TQ), in the state of Minas Gerais, Brazil. The used treatments were: (i) four doses (corresponding to 0, 40, 80 and 160 kg ha-1 K2O) on the TH soil and four doses (corresponding to 0, 60, 120 and 240 kg ha-1 K2O) on the TQ soil form, and (ii) two potassium sources (specifically, KCl and K2SO4) at a K2O equivalent doses of 80 kg ha-1 on the TH soil and 120 kg ha-1 on the TQ soil. The soybean yields resulting from the application of K-glycerin were found to be related to the availability of K in the soil and this source supplied in part the need of potassium by soybean crop. The K-glycerin does not cause any readily detectable harmful or environmental effect to these cropping sites; however, further detailed studies are needed to better evaluate the long-term use to understand the soil ions dynamics under the soybean crop.
Pesquisa Agropecuária Tropical, 2016
Weed interference in crops of economic interest is one of the major plant defense problems (Oerke... more Weed interference in crops of economic interest is one of the major plant defense problems (Oerke 2006). Among various weed species, blackjack biotypes (Bidens pilosa L.), in some cases, are classified as the most important ones in coffee plantations, due to the fast initial growth and efficient use of environmental resources, especially nutrients and water (Ronchi et al. 2007, Santos & Cury 2011). Herbicides are the main control method for weed management in coffee plantations, in Brazil.
How to cite Complete issue More information about this article Journal's homepage in redalyc.org ... more How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative
How to cite Complete issue More information about this article Journal's homepage in redalyc... more How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System
South American Journal of Basic Education, Technical and Technological, 2020
Revista Brasileira de …, 2011
To mitigate the impacts of eucalypt monoculture, forestry companies in the Upper Jequitinhonha Va... more To mitigate the impacts of eucalypt monoculture, forestry companies in the Upper Jequitinhonha Valley (MG) have adopted the insertion of strips of native vegetation in-between the commercial plantations. The method used for the creation of these corridors is to allow spontaneous regrowth of native vegetation in areas previously under eucalypt. The objective of this study was to evaluate the effect of cover crops on microbial and soil properties for a detailed description of the restoration process of native vegetation in forest soils of the Jequitinhonha Valley. The treatments were represented by an initial restoration stage (< 4 years) with or without remaining eucalypt and the advanced restoration stage (> 4 years) with or without remaining eucalypt, plus the three controls: commercial eucalypt plantation, Cerrado vegetation and native forest. Soil samples were collected for three consecutive years in the dry and rainy season (August and February, respectively). The microbial activity, regardless of the presence of remaining eucalypt , did not differ among the restoration areas, except for the metabolic quotient (qCO 2) in the rainy season of February 2007. At this time, this microbial activity was higher in the advanced restoration stage without eucalypt than initial restoration without eucalypt and advanced restoration with eucalypt. The Termos de indexação: revegetação espontânea, qualidade de solo, áreas degradadas, biomassa microbiana, atividade microbiana.